[net 0/6][pull request] Intel Wired LAN Driver Updates 2018-04-24

[net 0/6][pull request] Intel Wired LAN Driver Updates 2018-04-24

[Jeff Kirsher]

This series contains fixes to ixgbevf, igb and ice drivers.

Colin Ian King fixes the return value on error for the new XDP support
that went into ixgbevf for 4.16.

Vinicius provides a fix for queue 0 for igb, which was not receiving all
the credits it needed when QAV mode was enabled.

Anirudh provides several fixes for the new ice driver, starting with
properly initializing num_nodes_added to zero.  Fixed up a code comment
to better reflect what is really going on in the code.  Fixed how to
detect if an OICR interrupt has occurred to a more reliable method.

Md Fahad fixes the ice driver to allocate the right amount of memory
when reading and storing the devices MAC addresses.  The device can have
up to 2 MAC addresses (LAN and WoL), while WoL is currently not
supported, we need to ensure it can be properly handled when support is
added.

The following are changes since commit 9cf2f437ca5b39828984064fad213e68fc17ef11:
  team: fix netconsole setup over team
and are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue 1GbE

Anirudh Venkataramanan (2):
  ice: Fix initialization for num_nodes_added
  ice: Fix incorrect comment for action type

Ben Shelton (1):
  ice: Do not check INTEVENT bit for OICR interrupts

Colin Ian King (1):
  ixgbevf: ensure xdp_ring resources are free'd on error exit

Md Fahad Iqbal Polash (1):
  ice: Fix insufficient memory issue in ice_aq_manage_mac_read

Vinicius Costa Gomes (1):
  igb: Fix the transmission mode of queue 0 for Qav mode

 drivers/net/ethernet/intel/ice/ice_adminq_cmd.h   |  2 +-
 drivers/net/ethernet/intel/ice/ice_common.c       | 22 +++++++++++++++++-----
 drivers/net/ethernet/intel/ice/ice_hw_autogen.h   |  2 --
 drivers/net/ethernet/intel/ice/ice_main.c         |  4 ----
 drivers/net/ethernet/intel/ice/ice_sched.c        |  4 ++--
 drivers/net/ethernet/intel/igb/igb_main.c         | 17 ++++++++++++++++-
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |  2 +-
 7 files changed, 37 insertions(+), 16 deletions(-)

-- 
2.14.3

[net 1/6] ixgbevf: ensure xdp_ring resources are free'd on error exit

[Jeff Kirsher]

From: Colin Ian King <colin.king@canonical.com>

The current error handling for failed resource setup for xdp_ring
data is a break out of the loop and returning 0 indicated everything
was OK, when in fact it is not.  Fix this by exiting via the
error exit label err_setup_tx that will clean up the resources
correctly and return and error status.

Detected by CoverityScan, CID#1466879 ("Logically dead code")

Fixes: 21092e9ce8b1 ("ixgbevf: Add support for XDP_TX action")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 3d9033f26eff..e3d04f226d57 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -3420,7 +3420,7 @@ static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter *adapter)
 		if (!err)
 			continue;
 		hw_dbg(&adapter->hw, "Allocation for XDP Queue %u failed\n", j);
-		break;
+		goto err_setup_tx;
 	}
 
 	return 0;
-- 
2.14.3

[net 2/6] igb: Fix the transmission mode of queue 0 for Qav mode

[Jeff Kirsher]

From: Vinicius Costa Gomes <vinicius.gomes@intel.com>

When Qav mode is enabled, queue 0 should be kept on Stream Reservation
mode. From the i210 datasheet, section 8.12.19:

"Note: Queue0 QueueMode must be set to 1b when TransmitMode is set to
Qav." ("QueueMode 1b" represents the Stream Reservation mode)

The solution is to give queue 0 the all the credits it might need, so
it has priority over queue 1.

A situation where this can happen is when cbs is "installed" only on
queue 1, leaving queue 0 alone. For example:

$ tc qdisc replace dev enp2s0 handle 100: parent root mqprio num_tc 3 \
     	   map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@2 hw 0

$ tc qdisc replace dev enp2s0 parent 100:2 cbs locredit -1470 \
     	   hicredit 30 sendslope -980000 idleslope 20000 offload 1

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/igb/igb_main.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index c1c0bc30a16d..cce7ada89255 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -1700,7 +1700,22 @@ static void igb_configure_cbs(struct igb_adapter *adapter, int queue,
 	WARN_ON(hw->mac.type != e1000_i210);
 	WARN_ON(queue < 0 || queue > 1);
 
-	if (enable) {
+	if (enable || queue == 0) {
+		/* i210 does not allow the queue 0 to be in the Strict
+		 * Priority mode while the Qav mode is enabled, so,
+		 * instead of disabling strict priority mode, we give
+		 * queue 0 the maximum of credits possible.
+		 *
+		 * See section 8.12.19 of the i210 datasheet, "Note:
+		 * Queue0 QueueMode must be set to 1b when
+		 * TransmitMode is set to Qav."
+		 */
+		if (queue == 0 && !enable) {
+			/* max "linkspeed" idleslope in kbps */
+			idleslope = 1000000;
+			hicredit = ETH_FRAME_LEN;
+		}
+
 		set_tx_desc_fetch_prio(hw, queue, TX_QUEUE_PRIO_HIGH);
 		set_queue_mode(hw, queue, QUEUE_MODE_STREAM_RESERVATION);
 
-- 
2.14.3

[net 3/6] ice: Fix initialization for num_nodes_added

[Jeff Kirsher]

From: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>

ice_sched_add_nodes_to_layer is used recursively, and so we start
with num_nodes_added being 0. This way, in case of an error or if
num_nodes is NULL, the function just returns 0 to indicate that no
nodes were added.

Fixes: 5513b920a4f7 ("ice: Update Tx scheduler tree for VSI multi-Tx queue support")
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_sched.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_sched.c b/drivers/net/ethernet/intel/ice/ice_sched.c
index f16ff3e4a840..2e6c1d92cc88 100644
--- a/drivers/net/ethernet/intel/ice/ice_sched.c
+++ b/drivers/net/ethernet/intel/ice/ice_sched.c
@@ -751,14 +751,14 @@ ice_sched_add_nodes_to_layer(struct ice_port_info *pi,
 	u16 num_added = 0;
 	u32 temp;
 
+	*num_nodes_added = 0;
+
 	if (!num_nodes)
 		return status;
 
 	if (!parent || layer < hw->sw_entry_point_layer)
 		return ICE_ERR_PARAM;
 
-	*num_nodes_added = 0;
-
 	/* max children per node per layer */
 	max_child_nodes =
 	    le16_to_cpu(hw->layer_info[parent->tx_sched_layer].max_children);
-- 
2.14.3

[net 4/6] ice: Fix incorrect comment for action type

[Jeff Kirsher]

From: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>

Action type 5 defines large action generic values. Fix comment to
reflect that better.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_adminq_cmd.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index 5b13ca1bd85f..7dc5f045e969 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -586,7 +586,7 @@ struct ice_sw_rule_lg_act {
 #define ICE_LG_ACT_MIRROR_VSI_ID_S	3
 #define ICE_LG_ACT_MIRROR_VSI_ID_M	(0x3FF << ICE_LG_ACT_MIRROR_VSI_ID_S)
 
-	/* Action type = 5 - Large Action */
+	/* Action type = 5 - Generic Value */
 #define ICE_LG_ACT_GENERIC		0x5
 #define ICE_LG_ACT_GENERIC_VALUE_S	3
 #define ICE_LG_ACT_GENERIC_VALUE_M	(0xFFFF << ICE_LG_ACT_GENERIC_VALUE_S)
-- 
2.14.3

[net 5/6] ice: Do not check INTEVENT bit for OICR interrupts

[Jeff Kirsher]

From: Ben Shelton <benjamin.h.shelton@intel.com>

According to the hardware spec, checking the INTEVENT bit isn't a
reliable way to detect if an OICR interrupt has occurred. This is
because this bit can be cleared by the hardware/firmware before the
interrupt service routine has run. So instead, just check for OICR
events every time.

Fixes: 940b61af02f4 ("ice: Initialize PF and setup miscellaneous interrupt")
Signed-off-by: Ben Shelton <benjamin.h.shelton@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_hw_autogen.h | 2 --
 drivers/net/ethernet/intel/ice/ice_main.c       | 4 ----
 2 files changed, 6 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
index 1b9e2ef48a9d..499904874b3f 100644
--- a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
+++ b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
@@ -121,8 +121,6 @@
 #define PFINT_FW_CTL_CAUSE_ENA_S	30
 #define PFINT_FW_CTL_CAUSE_ENA_M	BIT(PFINT_FW_CTL_CAUSE_ENA_S)
 #define PFINT_OICR			0x0016CA00
-#define PFINT_OICR_INTEVENT_S		0
-#define PFINT_OICR_INTEVENT_M		BIT(PFINT_OICR_INTEVENT_S)
 #define PFINT_OICR_HLP_RDY_S		14
 #define PFINT_OICR_HLP_RDY_M		BIT(PFINT_OICR_HLP_RDY_S)
 #define PFINT_OICR_CPM_RDY_S		15
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 210b7910f1cd..5299caf55a7f 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -1722,9 +1722,6 @@ static irqreturn_t ice_misc_intr(int __always_unused irq, void *data)
 	oicr = rd32(hw, PFINT_OICR);
 	ena_mask = rd32(hw, PFINT_OICR_ENA);
 
-	if (!(oicr & PFINT_OICR_INTEVENT_M))
-		goto ena_intr;
-
 	if (oicr & PFINT_OICR_GRST_M) {
 		u32 reset;
 		/* we have a reset warning */
@@ -1782,7 +1779,6 @@ static irqreturn_t ice_misc_intr(int __always_unused irq, void *data)
 	}
 	ret = IRQ_HANDLED;
 
-ena_intr:
 	/* re-enable interrupt causes that are not handled during this pass */
 	wr32(hw, PFINT_OICR_ENA, ena_mask);
 	if (!test_bit(__ICE_DOWN, pf->state)) {
-- 
2.14.3

[net 6/6] ice: Fix insufficient memory issue in ice_aq_manage_mac_read

[Jeff Kirsher]

From: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>

For the MAC read operation, the device can return up to two (LAN and WoL)
MAC addresses. Without access to adequate memory, the device will return
an error. Fixed this by allocating the right amount of memory. Also, logic
to detect and copy the LAN MAC address into the port_info structure has
been added. Note that the WoL MAC address is ignored currently as the WoL
feature isn't supported yet.

Fixes: dc49c7723676 ("ice: Get MAC/PHY/link info and scheduler topology")
Signed-off-by: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_common.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 21977ec984c4..71d032cc5fa7 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -78,6 +78,7 @@ ice_aq_manage_mac_read(struct ice_hw *hw, void *buf, u16 buf_size,
 	struct ice_aq_desc desc;
 	enum ice_status status;
 	u16 flags;
+	u8 i;
 
 	cmd = &desc.params.mac_read;
 
@@ -98,8 +99,16 @@ ice_aq_manage_mac_read(struct ice_hw *hw, void *buf, u16 buf_size,
 		return ICE_ERR_CFG;
 	}
 
-	ether_addr_copy(hw->port_info->mac.lan_addr, resp->mac_addr);
-	ether_addr_copy(hw->port_info->mac.perm_addr, resp->mac_addr);
+	/* A single port can report up to two (LAN and WoL) addresses */
+	for (i = 0; i < cmd->num_addr; i++)
+		if (resp[i].addr_type == ICE_AQC_MAN_MAC_ADDR_TYPE_LAN) {
+			ether_addr_copy(hw->port_info->mac.lan_addr,
+					resp[i].mac_addr);
+			ether_addr_copy(hw->port_info->mac.perm_addr,
+					resp[i].mac_addr);
+			break;
+		}
+
 	return 0;
 }
 
@@ -464,9 +473,12 @@ enum ice_status ice_init_hw(struct ice_hw *hw)
 	if (status)
 		goto err_unroll_sched;
 
-	/* Get port MAC information */
-	mac_buf_len = sizeof(struct ice_aqc_manage_mac_read_resp);
-	mac_buf = devm_kzalloc(ice_hw_to_dev(hw), mac_buf_len, GFP_KERNEL);
+	/* Get MAC information */
+	/* A single port can report up to two (LAN and WoL) addresses */
+	mac_buf = devm_kcalloc(ice_hw_to_dev(hw), 2,
+			       sizeof(struct ice_aqc_manage_mac_read_resp),
+			       GFP_KERNEL);
+	mac_buf_len = 2 * sizeof(struct ice_aqc_manage_mac_read_resp);
 
 	if (!mac_buf) {
 		status = ICE_ERR_NO_MEMORY;
-- 
2.14.3

Re: [net 0/6][pull request] Intel Wired LAN Driver Updates 2018-04-24

[Jeff Kirsher]

[-- Attachment #1: Type: text/plain, Size: 2310 bytes --]

On Tue, 2018-04-24 at 12:29 -0700, Jeff Kirsher wrote:
> This series contains fixes to ixgbevf, igb and ice drivers.
> 
> Colin Ian King fixes the return value on error for the new XDP
> support
> that went into ixgbevf for 4.16.

Oops, I meant 4.17, not 4.16.

> 
> Vinicius provides a fix for queue 0 for igb, which was not receiving
> all
> the credits it needed when QAV mode was enabled.
> 
> Anirudh provides several fixes for the new ice driver, starting with
> properly initializing num_nodes_added to zero.  Fixed up a code
> comment
> to better reflect what is really going on in the code.  Fixed how to
> detect if an OICR interrupt has occurred to a more reliable method.
> 
> Md Fahad fixes the ice driver to allocate the right amount of memory
> when reading and storing the devices MAC addresses.  The device can
> have
> up to 2 MAC addresses (LAN and WoL), while WoL is currently not
> supported, we need to ensure it can be properly handled when support
> is
> added.
> 
> The following are changes since commit
> 9cf2f437ca5b39828984064fad213e68fc17ef11:
>   team: fix netconsole setup over team
> and are available in the git repository at:
>   git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue
> 1GbE
> 
> Anirudh Venkataramanan (2):
>   ice: Fix initialization for num_nodes_added
>   ice: Fix incorrect comment for action type
> 
> Ben Shelton (1):
>   ice: Do not check INTEVENT bit for OICR interrupts
> 
> Colin Ian King (1):
>   ixgbevf: ensure xdp_ring resources are free'd on error exit
> 
> Md Fahad Iqbal Polash (1):
>   ice: Fix insufficient memory issue in ice_aq_manage_mac_read
> 
> Vinicius Costa Gomes (1):
>   igb: Fix the transmission mode of queue 0 for Qav mode
> 
>  drivers/net/ethernet/intel/ice/ice_adminq_cmd.h   |  2 +-
>  drivers/net/ethernet/intel/ice/ice_common.c       | 22
> +++++++++++++++++-----
>  drivers/net/ethernet/intel/ice/ice_hw_autogen.h   |  2 --
>  drivers/net/ethernet/intel/ice/ice_main.c         |  4 ----
>  drivers/net/ethernet/intel/ice/ice_sched.c        |  4 ++--
>  drivers/net/ethernet/intel/igb/igb_main.c         | 17
> ++++++++++++++++-
>  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |  2 +-
>  7 files changed, 37 insertions(+), 16 deletions(-)
> 

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 833 bytes --]

Re: [net 0/6][pull request] Intel Wired LAN Driver Updates 2018-04-24

[David Miller]

From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Date: Tue, 24 Apr 2018 12:43:44 -0700

> On Tue, 2018-04-24 at 12:29 -0700, Jeff Kirsher wrote:
>> This series contains fixes to ixgbevf, igb and ice drivers.
>> 
>> Colin Ian King fixes the return value on error for the new XDP
>> support
>> that went into ixgbevf for 4.16.
> 
> Oops, I meant 4.17, not 4.16.

Pulled with this fixed, thanks Jeff.

Re: [net 1/6] ixgbevf: ensure xdp_ring resources are free'd on error exit

[Sergei Shtylyov]

Hello!

On 4/24/2018 10:29 PM, Jeff Kirsher wrote:

> From: Colin Ian King <colin.king@canonical.com>
> 
> The current error handling for failed resource setup for xdp_ring
> data is a break out of the loop and returning 0 indicated everything
> was OK, when in fact it is not.  Fix this by exiting via the
> error exit label err_setup_tx that will clean up the resources
> correctly and return and error status.

    s/and/an/&

> Detected by CoverityScan, CID#1466879 ("Logically dead code")
> 
> Fixes: 21092e9ce8b1 ("ixgbevf: Add support for XDP_TX action")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
[...]

MBR, Sergei

Re: [net 2/6] igb: Fix the transmission mode of queue 0 for Qav mode

[Sergei Shtylyov]

On 4/24/2018 10:29 PM, Jeff Kirsher wrote:

> From: Vinicius Costa Gomes <vinicius.gomes@intel.com>
> 
> When Qav mode is enabled, queue 0 should be kept on Stream Reservation

    s/on/in/?

> mode. From the i210 datasheet, section 8.12.19:
> 
> "Note: Queue0 QueueMode must be set to 1b when TransmitMode is set to
> Qav." ("QueueMode 1b" represents the Stream Reservation mode)
> 
> The solution is to give queue 0 the all the credits it might need, so
> it has priority over queue 1.
> 
> A situation where this can happen is when cbs is "installed" only on
> queue 1, leaving queue 0 alone. For example:
> 
> $ tc qdisc replace dev enp2s0 handle 100: parent root mqprio num_tc 3 \
>       	   map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@2 hw 0
> 
> $ tc qdisc replace dev enp2s0 parent 100:2 cbs locredit -1470 \
>       	   hicredit 30 sendslope -980000 idleslope 20000 offload 1
> 
> Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
> Tested-by: Aaron Brown <aaron.f.brown@intel.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
[...]

MBR, Sergei